Post-processing packaging unit thermal state axial thrust test tool and detection equipment

Abstract

The utility model relates to the technical field of post-processing system detection, and discloses a post-processing packaging unit thermal state axial thrust test tool and detection equipment, and the tool comprises a metal housing which is provided with a cavity; the hollow carrier is located in the cavity of the metal shell, and the hollow carrier is provided with a containing cavity; the to-be-tested gasket is positioned between the outer wall of the hollow carrier and the inner wall of the cavity; the first heating coil comprises a first part, a middle part and a second part which are sequentially connected end to end, and the middle part is located in the containing cavity; and the second heating coil is wound on the outer wall of the metal shell. The heating of the accommodating cavity of the hollow carrier can be realized by heating the first heating coil, and the heating of the metal shell can be realized by heating the second heating coil, so that the operation temperature of a packaging unit in a post-processing system under an actual working condition can be simulated, and then the holding force of a to-be-detected gasket of the tool can be detected. And the detection accuracy can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of post-treatment system detection, in particular to a hot axial thrust test tooling and detection equipment for a post-treatment encapsulation unit. Background Art

[0002] With the development of technology, in existing vehicles, engine exhaust gas is usually treated by a post-treatment system. The encapsulation unit of the post-treatment system generally includes a housing with a catalyst inside, and a gasket is also provided between the catalyst and the inner wall of the housing to fix the catalyst. To prevent the gasket from aging, in the prior art, before the encapsulation unit is put into use, an axial push table is usually used to detect the holding force of the gasket to determine whether the encapsulation unit meets the requirements.

[0003] However, during the actual operation of the vehicle, the temperature of its post-treatment system will increase. The detection method in the prior art cannot simulate the actual working conditions of the encapsulation unit.

[0004] Therefore, how to simulate the actual working conditions to detect the gasket holding force of the encapsulation unit in the post-treatment system, so as to improve the detection accuracy, has become an urgent technical problem in this field. Summary of the Utility Model

[0005] The purpose of the utility model is to at least solve how to simulate the actual working conditions to detect the gasket holding force of the encapsulation unit in the post-treatment system, so as to improve the detection accuracy. This purpose is achieved by the following technical solutions:

[0006] In a first aspect, the utility model provides a hot axial thrust test tooling for a post-treatment encapsulation unit, which includes:

[0007] A metal housing having a cavity;

[0008] A hollow carrier located in the cavity of the metal housing. The hollow carrier has a receiving cavity, and the outer wall of the hollow carrier is provided with a first through hole and a second through hole respectively communicating with the receiving cavity;

[0009] A gasket to be tested located between the outer wall of the hollow carrier and the inner wall of the metal housing;

[0010] A first heating coil, which includes a first part, a middle part and a second part connected end to end in sequence. The middle part is located in the receiving cavity, the first part passes through the first through hole, and the second part passes through the second through hole; and

[0011] A second heating coil wound around the outer wall of the metal housing.

[0012] This post-treatment encapsulation unit hot-state axial thrust test tooling can heat the hollow carrier's accommodation cavity by heating the first heating coil, and heat the metal housing by heating the second heating coil, so as to simulate the operating temperature of the encapsulation unit in the post-treatment system under actual working conditions. Then, by detecting the holding force of the gasket to be tested on the hot thrust tooling, the accuracy of the detection can be improved.

[0013] In some embodiments of the present invention, the post-treatment encapsulation unit hot-state axial thrust test tooling further includes a first detection device, and the first detection device is used to monitor the temperature in the accommodation cavity.

[0014] In some embodiments of the present invention, the first detection device includes a thermocouple wire. A third through hole is provided on the outer wall of the hollow carrier, and the thermocouple wire is threaded through the third through hole.

[0015] In some embodiments of the present invention, both the thermocouple wire and the third through hole are multiple, and the multiple thermocouple wires are arranged in one-to-one correspondence with the multiple third through holes.

[0016] In some embodiments of the present invention, the multiple thermocouple wires are evenly spaced circumferentially around the hollow carrier.

[0017] In some embodiments of the present invention, the post-treatment encapsulation unit hot-state axial thrust test tooling further includes a second detection device, and the second detection device is used to monitor the temperature of the metal housing.

[0018] In some embodiments of the present invention, the second detection device includes a thermocouple sheet, and the thermocouple sheet is installed on the second heating coil.

[0019] In some embodiments of the present invention, there are multiple thermocouple sheets.

[0020] In some embodiments of the present invention, the multiple thermocouple sheets are evenly spaced circumferentially around the metal housing.

[0021] In a second aspect, the present invention provides a post-treatment encapsulation unit detection device. The post-treatment encapsulation unit detection device includes an axial thrust table and any one of the above-mentioned post-treatment encapsulation unit hot-state axial thrust test toolings, and the post-treatment encapsulation unit hot-state axial thrust test tooling is arranged on the axial thrust table.

[0022] The above description is only an overview of the technical solutions of this application. In order to be able to understand the technical means of this application more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features and advantages of this application more obvious and understandable, the specific embodiments of this application are specifically given below. Description of the Drawings

[0023] Various other advantages and benefits will become clear to those of ordinary skill in the art by reading the following detailed description of the preferred embodiments. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present utility model. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0024] Figure 1 FIG. 4 is a schematic structural diagram of a hot axial thrust test tooling for a post-treatment encapsulation unit provided by an embodiment of the present utility model;

[0025] Figure 2 FIG. 5 is a sectional view of a hot axial thrust test tooling for a post-treatment encapsulation unit provided by an embodiment of the present utility model;

[0026] Figure 3 FIG. 6 is an exploded view of a hot axial thrust test tooling for a post-treatment encapsulation unit provided by an embodiment of the present utility model;

[0027] Figure 4 FIG. 7 is a schematic structural diagram of a post-treatment encapsulation unit detection device provided by an embodiment of the present utility model.

[0028] The reference numerals are as follows:

[0029] 10. Hot axial thrust test tooling for post-treatment encapsulation unit;

[0030] 1. Metal housing; 11. Cavity;

[0031] 2. Hollow carrier; 21. First through hole; 22. Second through hole; 23. Third through hole; 24. Accommodating cavity;

[0032] 3. Pad to be measured;

[0033] 4. First heating coil; 41. First part; 42. Second part; 43. Intermediate part;

[0034] 5. Second heating coil;

[0035] 6. Thermocouple wire;

[0036] 7. Thermocouple chip;

[0037] 100. Post-treatment encapsulation unit detection device;

[0038] 8. Axial thrust table; 81. Table body; 82. Pushing plate. Specific embodiments

[0039] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be fully conveyed to those skilled in the art.

[0040] It should be understood that the terms used herein are for the purpose of describing particular example embodiments only and are not intended to be limiting. Unless the context clearly dictates otherwise, the singular forms "a", "an", and "the" as used herein may also include the plural forms. The terms "comprising", "including", "containing", and "having" are inclusive and thus specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the particular order described or illustrated, unless an execution order is explicitly stated. It should also be understood that additional or alternative steps may be used.

[0041] Although the terms first, second, third, etc. may be used herein to describe multiple elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or section from another. Unless the context clearly indicates otherwise, terms such as "first", "second", and other numerical terms do not imply an order or sequence when used herein. Thus, the first element, component, region, layer, or section discussed below may be referred to as the second element, component, region, layer, or section without departing from the teachings of the example embodiments.

[0042] For ease of description, spatial relative relationship terms may be used in the text to describe the relationship of one element or feature shown in the figure with respect to another element or feature. These relative relationship terms are, for example, "inside", "outside", "inner side", "outer side", "below", "beneath", "above", "over", etc. Such spatial relative relationship terms are intended to include different orientations of the device during use or operation in addition to the orientations depicted in the figure. For example, if the device in the figure is flipped, an element described as "below" or "beneath" other elements or features will then be oriented as "above" or "over" other elements or features. Thus, the example term "below" can include both upward and downward orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used in the text are interpreted accordingly.

[0043] Figure 1 Schematic structural view of a hot axial thrust test tooling for a post-treatment packaging unit provided by an embodiment of the present utility model; Figure 2 Cross-sectional view of a hot axial thrust test tooling for a post-treatment packaging unit provided by an embodiment of the present utility model; Figure 3 Exploded view of a hot axial thrust test tooling for a post-treatment packaging unit provided by an embodiment of the present utility model.

[0044] As Figures 1 to 3 As shown, an embodiment of the present utility model provides a hot axial thrust test tooling 10 for a post-treatment packaging unit. The hot axial thrust test tooling 10 for a post-treatment packaging unit includes:

[0045] A metal housing 1 having a cavity 11;

[0046] A hollow carrier 2 located in the cavity 11 of the metal housing 1. The hollow carrier 2 has a receiving cavity 24, and the outer wall of the hollow carrier 2 is provided with a first through hole 21 and a second through hole 22 respectively communicating with the receiving cavity 24;

[0047] A to-be-tested gasket 3 located between the outer wall of the hollow carrier 2 and the inner wall of the metal housing 1;

[0048] A first heating coil 4, the first heating coil 4 includes a first part 41, a middle part 43 and a second part 42 connected end to end in sequence. The middle part 43 is located in the receiving cavity 24, the first part 41 passes through the first through hole 21, and the second part 42 passes through the second through hole 22; and

[0049] A second heating coil 5 wound around the outer wall of the metal housing 1.

[0050] Among them, it is easy to understand that for the hot axial thrust test tooling 10 of the post-treatment encapsulation unit in this embodiment, by removing the first heating coil 4 and the second heating coil 5 and placing a catalyst in the hollow carrier 2, the encapsulation unit in the post-treatment system can be obtained.

[0051] In addition, the purpose of setting the first through hole 21 and the second through hole 22 is to enable the first part 41 and the second part 42 of the first heating coil 4 to pass through the accommodation cavity 24 of the hollow carrier 2, so as to energize the first heating coil 4 and further achieve the heating effect.

[0052] In this embodiment, heating the first heating coil 4 can be used to heat the accommodation cavity 24 of the hollow carrier 2, and heating the second heating coil 5 can be used to heat the metal housing 1, so as to simulate the operating temperature of the encapsulation unit in the post-treatment system under actual working conditions. Then, by detecting the holding force of the gasket 3 to be measured on the hot thrust tooling, the detection accuracy can be improved.

[0053] Therefore, with this setting method, by setting the first heating coil 4 and the second heating coil 5, the operating temperature of the encapsulation unit in the post-treatment system under actual working conditions can be conveniently simulated, thereby realizing the accurate measurement of the holding force of the gasket 3 to be measured, and the structure is simple and the operation is convenient.

[0054] According to an optional embodiment of the present invention, the hot axial thrust test tooling 10 of the post-treatment encapsulation unit further includes a first detection device for monitoring the temperature in the accommodation cavity 24.

[0055] In this embodiment, by monitoring the temperature in the accommodation cavity 24 with the first detection device, the temperature of the catalyst under the actual operation of the simulated vehicle can be made more accurate, thereby further improving the detection efficiency.

[0056] Reference Figures 1 to 3 , specifically, according to an optional embodiment of the present invention, the first detection device includes a thermocouple wire 6, and a third through hole 23 is provided on the outer wall of the hollow carrier 2, and the thermocouple wire 6 is disposed through the third through hole 23.

[0057] In this embodiment, the thermocouple wire 6 can be signal-connected to a display device to display the actual temperature in the accommodation cavity 24 in real time.

[0058] Continue to refer to Figures 1 to 3 , according to an optional embodiment of the present invention, both the thermocouple wire 6 and the third through hole 23 are multiple, and the multiple thermocouple wires 6 are arranged in one-to-one correspondence with the multiple third through holes 23.

[0059] In this embodiment, the arrangement of multiple thermocouple wires 6 can detect the actual temperature in the accommodation cavity 24 more evenly and accurately. Specifically, the multiple thermocouple wires 6 can also be evenly spaced along the circumferential direction of the hollow carrier 2 to further improve the detection accuracy.

[0060] According to an optional embodiment of the present invention, the post-treatment packaging unit hot-state axial thrust test tooling 10 further includes a second detection device for monitoring the temperature of the metal housing 1.

[0061] In this embodiment, by monitoring the temperature of the metal housing 1 through the second detection device, the temperature of the metal housing 1 under the actual operation of the simulated vehicle can be made more accurate, thereby further improving the detection efficiency.

[0062] As Figure 1 and Figure 3 shown, specifically, according to an optional embodiment of the present invention, the second detection device includes a thermocouple chip 7, and the thermocouple chip 7 is installed on the second heating coil 5.

[0063] In this embodiment, the thermocouple chip 7 can be signal-connected to a display device to display the actual temperature in the accommodation cavity 24 in real time.

[0064] Continuing to refer to Figure 1 and Figure 3 , according to an optional embodiment of the present invention, there are multiple thermocouple chips 7.

[0065] In this embodiment, the arrangement of multiple thermocouple chips 7 can detect the actual temperature of the metal housing 1 more evenly and accurately. Specifically, the multiple thermocouple chips 7 can also be evenly spaced along the circumferential direction of the metal housing 1 to further improve the detection accuracy.

[0066] Figure 4 is a schematic structural diagram of the post-treatment packaging unit detection device provided by the embodiment of the present invention. Referring together to Figure 1 and Figure 2 , the embodiment of the present invention also provides a post-treatment packaging unit detection device 100. The post-treatment packaging unit detection device 100 includes a shaft pushing table 8 and any one of the above-mentioned post-treatment packaging unit hot-state axial thrust test toolings 10, and the post-treatment packaging unit hot-state axial thrust test tooling 10 is arranged on the shaft pushing table 8.

[0067] In this embodiment, the shaft pushing table 8 may include a table body 81 and a pushing plate 82. During detection, the post-treatment packaging unit hot-state axial thrust test tooling 10 is placed on the table body 81, and the hollow carrier 2 is pushed by the pushing plate 82 until the hollow carrier 2 moves in a uniform linear motion relative to the metal housing 1. At this time, record the thrust F, and then the judgment can be made according to the following formula;

[0068] If F ≥ ma + PA, it indicates that the gasket 3 to be tested in the post-treatment encapsulation unit hot-state axial thrust test tooling 10 is qualified hereafter; conversely, if F < ma + PA, it indicates that the gasket 3 to be tested in the post-treatment encapsulation unit hot-state axial thrust test tooling 10 is unqualified.

[0069] In this formula, m is the sum of the masses of the actual carrier and the catalyst in the encapsulation unit of the post-treatment system, a is the maximum acceleration of the carrier itself under actual working conditions, P is the pressure exerted on the carrier under actual working conditions, and A is the cross-sectional area of the carrier.

[0070] It should be noted that this embodiment only takes one detection method as an example; under actual working conditions, the detection method is the same as that in the prior art, and any matching detection method can be selected, which will not be elaborated here. The embodiment of the present utility model aims to control the temperature of the post-treatment encapsulation unit hot-state axial thrust test tooling 10 during detection to simulate the heat absorption situation of the encapsulation unit under actual working conditions.

[0071] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. A post-processing packaging unit hot axial thrust test tool, characterized in that: include: A metal housing having a cavity; A hollow carrier is located in the cavity of the metal shell, the hollow carrier has a receiving cavity, and an outer wall of the hollow carrier is provided with a first through hole and a second through hole respectively connected to the receiving cavity; A liner to be tested is located between the outer wall of the hollow carrier and the inner wall of the metal shell; a first heating coil, the first heating coil comprising a first portion, a middle portion and a second portion connected end to end in sequence, the middle portion being located in the accommodating cavity, the first portion being passed through the first through hole, and the second portion being passed through the second through hole; and A second heating coil is wound around the outer wall of the metal shell.

2. The hot axial thrust test fixture for the post-processing packaging unit according to claim 1, characterized in that: The post-processing packaging unit hot axial thrust test tool further includes a first detection device, which is used to monitor the temperature in the accommodating cavity.

3. The hot axial thrust test fixture for the post-processing packaging unit according to claim 2, characterized in that: The first detection device comprises a thermocouple wire, the outer wall of the hollow carrier is provided with a third through hole, and the thermocouple wire is passed through the third through hole.

4. The hot axial thrust test fixture for the post-processing packaging unit according to claim 3 is characterized in that: There are multiple thermocouple wires and multiple third through holes, and the multiple thermocouple wires are arranged in a one-to-one correspondence with the multiple third through holes.

5. The hot axial thrust test fixture for the post-processing packaging unit according to claim 4, characterized in that: The plurality of thermocouple wires are evenly spaced and distributed around the circumference of the hollow carrier.

6. The hot axial thrust test fixture for the post-processing packaging unit according to any one of claims 1 to 5, characterized in that: The post-processing packaging unit hot axial thrust test tool also includes a second detection device, which is used to monitor the temperature of the metal shell.

7. The hot axial thrust test fixture for the post-processing packaging unit according to claim 6, characterized in that: The second detection device includes a thermocouple sheet, and the thermocouple sheet is installed on the second heating coil.

8. The hot axial thrust test fixture for the post-processing packaging unit according to claim 7, characterized in that: There are multiple thermocouple pieces.

9. The hot axial thrust test fixture for the post-processing packaging unit according to claim 8, characterized in that: The plurality of thermocouple pieces are evenly spaced and distributed around the circumference of the metal shell.

10. A post-processing packaging unit detection device, characterized in that: It comprises an axle pushing platform and a hot axial thrust test tool for a post-processing packaging unit as described in any one of claims 1 to 9, wherein the hot axial thrust test tool for a post-processing packaging unit is arranged on the axle pushing platform.

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